基于 Android 平台的信息采集与远程显示系统研究

为提高农场主对温室集群信息的准确性和实时性, 提出了基于 Android 平台的信息采集与远程显示系统, 在 Android 平台上实现对温室大棚温度信息的采集与上传至远程服务器, 用户再通过 Android 客户端程序或者浏 览器实现对温度信息的观测, 从而大大提高了获取温度信息途径的便捷性, 用户可以做到随时随地实时获取。 该 系统首先将嵌入式 Android 平台通过 JNI(Java Native Interface)调用读取外置温度传感器数据, 并通过 Internet 将 采集数据上传至 LAMP(Linux Apache MySQL PHP)服务器; 再将运行 Android 客户端或浏览器访问 Web 网页, 通 过 Internet 从服务器获取数据显示给用户。 程序运行测试证明, 该系统运行稳定, 并具有很好的用户交互效果, 同时, 对信息采集端网络情况不佳时数据上传程序进行了优化处理, 实现了断网后在网络恢复时续传的功能。     

AJAX技术在图文直播系统中的应用

AJAX是近几年出现的Web开发新技术,它实现了浏览器和服务器之间的异步交互.结合四川广播电视大学30周年校庆图文直播系统,对AJAX技术在图文直播系统的应用作了详细分析.应用AJAX技术,实现了浏览器和直播服务器之间的异步通信,很好解决了浏览器阻塞问题,并带来良好的用户体验.实践表明,采用AJAX方式与传统的同步方式相比,具有图片刷新快,无页面闪烁的特点.     

基于Comet的同步协同Web表单模型研究

在电子表单操作中,不但有大量协同信息的传递,而且有对同一表单的同步处理操作,而传统的的Web电子表单系统提供的是一种简单的异步交互方式,不适合高度互动的交互方式．为此,笔者提出一个在B／S模式环境下基于Comet的实时协同Web模型：CoModel．CoModel在传统Web电子表单系统的基础上,在表单服务器和Web服务器之间增加CoModel服务器,用于将表单转换成XML数据格式,来解决大量表单信息的交换和协同;为了解决传统Web电子表单的实时同步协同问题,在Web服务器上增加Comet传输功能,不仅解决了表单的实时数据传输问题,而且解决了浏览器的兼容性和插件问题．     

Ajax技术在内蒙古烟草外部网站建设中的应用研究

Ajax用来描述一组技术,使浏览器可以为用户提供更为自然的浏览体验,克服了传统Web站点强制用户进入提交-等待-重新刷新显示这样的范例,提供与服务器异步通信的能力,从而使用户从请求/响应的循环中解脱出来.并将Ajax技术应用于内蒙古烟草行业外部网站建设中,研究了内蒙古烟草行业外部网站的Web数据提取流程.     

基于Web的大文件上传技术研究

基于Web的大文件上传是Web应用系统中经常遇到的问题。目前,基于Web的大文件上传组件比较缺乏,且不支持断点续传。在.NET框架下,利用JavaScript和ADODB.Stream技术实现了文件的分块读取,利用XMLHttp技术实现文件块的异步发送,然后在服务器端接收文件块并记录接收日志,在此基础上实现了文件的断点续传,且传输速度较快,对文件的大小没有限制。     

基于Web的虚拟教室

虚拟是计算机技术中的一种模拟技术,即利用软件来完成原来只有通过特定硬件才能实现的工作。基于Web的虚拟教室就是在Internet环境下利用Web服务器技术构筑的一个虚拟的教学环境。 虚拟教室构建在Internet环境下,南Web服务器、多媒体课件、用户计算机和浏览器软件组成。教学内容由存放在Web服务器上的多媒体课件构成,用户通过Internet,使用计算机上的浏览器学习和检索信息。 一、基于Web的虚拟教室的工作原理 基于Web的虚拟教室在设计上采用浏览器/服务器(Browser/Server)应用模式。用户在客户端使用浏览器软件即可     

基于Ajax的购物车模块的设计与实现

本文详细介绍一种方法--Ajax技术,使用它可以构建更为动态和响应更为灵敏的Web应用程序.该方法的关键在于对浏览器端的JavaScript、DHTML与服务器异步通信的组合.文章通过将Ajax应用于商务网站的购物车部分,克服了以往人们在购物时需要不断刷新页面等待结果的一些缺陷,使得用户可以更好的得到购物体验,提高了用户的积极性.     

利用FileUpload控件实现多文件上传

文件的上传在现在的Web中已经随处可见,它将在未来的Web数据库应用中会得到更加广泛的应用。FileUpload控件是微软ASP.NET2.0中新增的一个控件,但它只能一次上传一个文件,而在飞行试验数据库管理系统中,可能一次需要将多个文件同时上传到服务器中。因此文章主要介绍了如何利用FileUpload控件实现多文件的上传。     

微型Web服务器的设计与实现

www的工作基于客户机／服务器计算模型,由Web浏览器（客户机）和Web服务器（服务器）构成,两者之间采用超文本传送协议（HTTP）进行通信。HTTP协议的作用原理包括四个步骤：连接,请求,应答,关闭。根据上述HTTP协议的作用原理,本文实现了GET请求的Web服务器程序的方法,通过创建Server Socket类对象,监听端口8080;等待、接受客户机连接到端口8080;创建与socket字相关联的输入流和输出流：然后读取客户机的请求信息,若请求类型是GET,则从请求信息中获取所访问的HTML文件名,如果HTML文件存在,则打开HTML文件．把HTTP头信息和HTML文件内容通过socket传回给Web浏览器,然后关闭文件,否则发送错误信息给Web浏览器。最后,关闭与相应Web浏览器连接的socket字。     

基于jQuery框架的Web研究与实现

传统的Web应用解决方案将所有的操作集成在服务器端进行,客户端所做的工作只是简单的显示网页。Ajax的出现改变了传统Web开发的模式,通过异步方式的数据传输实现Web服务的有效性和独立性,将之前的单击显示页面式的体验变成具有交互性、灵活性的桌面应用程序体验。基于Ajax技术的Web程序开发和应用不仅对浏览器兼容性差,而且采用传统的XML进行数据传输。XML数据格式在使用的过程中不仅会带来很多数据冗余,而且还不容易对其解析。将XML和JSON进行对比和分析,最终以JSON作为Ajax通信中的数据传递格式,并用jQuery中的方法来解析JSON数据与封装Ajax异步请求。jQuery是一个优秀、灵活多变的JavaScript框架,可以兼容CSS3和各种主流的浏览器,其模块化的开发方式可以让开发者按需加载资源。在分析了传统的Web开发模式存在的问题后,提出了基于jQuery框架的Ajax异步请求,实现Web快速便捷开发与更优化的用户体验。     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

橡胶颗粒沥青混合料低温抗裂性试验研究

以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

Quantitative trait loci （QTLs） for quality traits related to protein and starch in wheat

Quality traits in wheat （Triticum aestirum L.） were studied by quantitative trait locus （QTL） analysis in a recombinant inbred line （RIL） population, a set of 131 lines derived from Chuan 35050 × Shannong 483 cross （ChSh）. Grains from RILs were assayed for 21 quality traits related to protein and starch. A total of 35 putative QTLs for 19 traits with a single QTL explaining 7.99-40.52% of phenotypic variations were detected on 10 chromosomes, 1D, 2A, 2D, 3B, 3D, 5A, 6A, 6B, 6D, and 7B. The additive effects of 30 QTLs were positive, contributed by Chuan 35050, the remaining 5 QTLs were negative with the additive effect contributed by Shannong 483. For protein traits, 15 QTLs were obtained and most of them were located on chromosomes 1 D, 3B and 6D, while 20 QTLs for starch traits were detected and most of them were located on chromosomes 3D, 6B and 7B. Only 7 QTLs for protein and starch traits were co-located in three regions on chromosomes 1D, 2A and 2D. These protein and starch trait QTLs showed a distinct distribution pattern in certain regions and chromosomes. Twenty-two QTLs were clustered in 6 regions of 5 chromosomes. Two QTL clusters for protein traits were located on chromosomes 1D and 3B, respectively, three clusters for starch traits on chromosomes 3D, 6B and 7B, and one cluster including protein and starch traits on chromosome 1D.     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.